Self-lubricating car-wheel.



.|f. NI. SLAUGHTER.

SELF LUBRICATING CAR WHEEL. APPLICATIONHLEDSEPLH.1916.

Patent-ed May l5, 1917.

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` 1. M. lSLAUGHTERI `SELF LUBHICATING CAR WHEEL. TION FILED SEPTLH. i916.

Patented May15,1917.

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irren srATEsPA'rEnT OFFICE.

i. JAMES" IMINiRl'lIEl SLAUGHTER, 0F CHAATTANOOGA, TENNESSIEE.,4

" To all 'whom it may] concern: y n

, Beit known that I, JAMES M. SLAUGHTER, residing at Chattanooga, in the county of Hamllt-en andlState of Tennessee, havevnvented certain new and useful Improve- ,ments in Self-Lubricating Car-Wheels, of

*@Which the following is a, specification.

This invention has especial reference to wan :'ulrproved.lconstruction` of bushing and l operatively connected, quickly applied for use, and in which the bushing is held pracy tically dirt, dust and water proof.

i f" `Another object of my invention is to provide an improved bushin and means for interlocking the said `bushing with the axle il thatli's `so arranged and adapted for being somounted that the end thrust is taken up atithe end of the axle, and the bushing, .when `Worn at the` back end, may be easily ifemoved and-"a new one'substituted therefor.` l Again, my `invention.provides, in a com- Vbined bushing and coperating means for `locking the bushing onto the axle, an imwproved arrangement `of oil reservoir in the l I"ybushinganda peculiar shaping of the rear fend 'of the bushing Where it fits into the Wheel hub, whereby the oil reservoir is Wmadefpractically absolutely oil tight Vand 2f-y such that the oil can only escape. out oi the iwheel along the axlehore, and thereby lubri'cate all of the wearing parts.

Al/Vitli other objects in view that will L.hereinafter appear, my invention.embodies "1 I the vpeculiar features ol" construction and u combination oi' parts set :forth in the following description, specifically pointed out in lthcappended claims and illustrated in the accompanying drawings, in which y Figure 1 is Aa horizontal `seetidn of aV v"plain"bearingcar wheel, embodying my in- Fig. 2 is a side elevation of thebushng.

operatively applied to roller bearing'mine sELr-LUBBICATINQ (mn-WHEEL.A

`Specification of Letters Patent. Patented luay 15, 1917- applicati@ med september 11, i916. serial No. 119,497.

3 is a frontend elevation thereof.

Fig. 4. is a side elevation of the: grooved end of the axle.

Fig. -5`is a perspective view of Fig. 6 is a similar view of the bottom` locking device or key, hereinafter referred o. v

Fig. 7 is ahorizontal section of ai'oller bearing car Wheel With my improvement applied. N

Fig. 8 is across section :thereof on the line 8 8 on Fig. 7.

Fi 9 is a section `of a plain bearing Whee with a modified construction of bushing andlocking means.

Fig. 10 is an end elevation thereof.

Fig. 11 is a cross section on the line 11-11 on Fig. 7.

Fig. 12 is across section on the line 12-12 on Fig. l. w i y In the preferred form, when applied to a plain bearing car wheel as shown in F ig. l, the bushing is inthe nature` of a single body 1, bored as at 2, to receive and fit over theend of the axle 3 and formed at the outer or front end, With an annular chamber or pocket 4 that merges with an axial bore 5 of reduced diameter and which extends through the said outer or front end of the bushing,

The 'front end of the bushin is tapered and when operatively applic the said i bushing has a limited longitudinal movebushing has an enlarged annular shoulder` 9 that snugly fits the opening 10 at the rear or back of the wheel hub and the said hushing also has an annular rimV 11 that .is held practically oil tight against the wheel hub, as shown.

For interlocking the bushing with the wheel hub,r the taperedI or flat end of the said bushing `has atleast one lug 1Q for en-y gagnga corresponding socket 12"L in `the wheel hub, as shown.

14 designates a. combined end thrust and tie boltthat passes through the aperture 15 in the inner end of the'wheel hub and the projected threaded end of the said bolt being yinterposed between the said bolt head i receives clam nut 14, as shown.

The head o the bolt 14 fits in the pocket 4 in the bushing 'adjacent the inner end of the axle, a case hardened steel washer 40 and the axle end. i

The locking means, which form anessential part of my invention, when ofthe preferred construction as shown in Figs. 1, 5,

6 and 12 consists in providing the inner end of the axle 3 itith an annular groove 30 and a bushing with an annular groove 2O of less width than the axle groove 30.

The groove in the bushing extends under the axle and in line with the .axle groove 30 and the said bushing is also provided with a transverse socnet 2l the full .width vof the upper` part of the body and disposed in annular alinement with the axle groove 30 andthe bushing groove 20.

The .locking means includes a pairy of.;

bottom of the bushing groove 2O and into the position best shown in Fig. 12, and a top ringsegment 24 vadapted to ll the .transverse socket 21 in the vbushing and to lit into the axle and the bushing groove,

- zand the said top ringsegment 24 1s held in position by the inside bore or housing of@` the axle'having a locking groove, a bushthe wheel and cannot drop out of place i* ing bored vto fit over the grooved end of until the bushing is entirely removed from the wheel. *'25 designates a screw plu aperture in the wheel hub for the oil .supp y and 26.-26 designate fluid passages in the bushing that leads the lubricant vto the axle.

Instead of making the locking elements in two sections, an upper and a lower member, and the bushing a single body as in the preferred form heretofore described, the said bushing may be made in two pieces, top and bottom members, as shown in Figs. 9 and 10, and when thus formed, the top and bottom bushing sections have the upper and lower locking segments or keys cast thereon as indicated at 28 and 29.

When applied to a roller bearing car.

wheel as shown in Figs. 7, 8 and 11, the

' bushing is located in the front yend of the wheel hub, is keyed to the grooved axle and connected to the hub by the thrust bolt, the axle groove being of sufficient width to relieve the locking segments or keys from end thrust or stra-ins.

The roller bearings 35 spaced around the axle, are held in place by end rings 36 and the latter have tapered bearings 36 for entering tapered sockets in the ends of the v rollers and to relieve the said roller beard ings of end thrust strains', the rings 36 have j a limited playy betweenthe bushingv atone end land the cast washer 37 that 'ts the lpore at the inner end of the wheel hub.

`From the foregoing description taken inl connection with the drawings, the complete structure andthe coperationof the parts is shown and described and locking devices ing with the axle, the sald bushing will prove most advantageous in' user because when Worn at the back end of hubalong I the axle bore, the bushing only is discarded.

v for interlo'ckably connecting the said bushl v .and a new bushing which costs only a fraction of the entire wheell is inserted into the wheel housing-thereby producing practi# cally all of the benefits of a new wheel at a small cost compared withy the present uage of having@ SCHIP the wheels-and i I .substitute a new wheel when .the axle bore becomes worn.

Another advantage in the u se of my tapering the back end of the bushing where it fits into the wheel, the oil well 1s made pei cial design of bushing is that the same. makes its own oil well or reservoir and byv absolutely oil -tight so. that the lubricant can only escape out of the wheel along the axle bore. i What 'I claim` isz.

-1. In -a car wheel, the combination with the axle, a locking means independent of` .the axle and the bushing coperating with Iinterlockably connecting the bushing and the hub and other means for holding the wheel and hub from endwise displacement over the bushing and axle.

2. In a car wheel, the combination with the axle having alocking groove, a. bushing bored to fit over the grooved end of the axle, a locking means coperating with the said axle groove and the said bushing to lock the said bushing to the axle, a car wheel having a tubular hub in which the bushing and, axle are received, means for interlockably connecting the b ushing and the hub and other means for 'holding'the wheel and hub fromendwise displacement over the bushing and axle` the said bushing and axle having a relative limited lon gitudinal movement.

3. In a car Wheel` the combination with the annularly grooved axleand the wheel y ih ub, said bushing having an annular groove that enters the wheel hub; a bushing bored to fit over the grooved end of the axle, a closure member that engages the axle and covers the open end of the hub, the said bushing having a closed end face, means for holding the said end face of the bushing up against the closed end of the hub, locking devices that cooperate with the bushing and the groove in rthe axle, the said axle having a limited movement relative to the locking devices, whereby to relieve the said devices of end thrust strains, and means interposed f between the axle end and the bushing foi" transferring theaxle end thrust to the bushing and the wheel hub. y

Y 5. In awvheel, the combination with the end closed wheel` hub-and the axle, the said axle having an jannular groove inthe end that enters the wheel hub; a bushing bored to iitover thegrooved end of the axle, a closure member that engages the axleand covers the open end of the hub, the said bushing having a closed end face,lmeans for "holding the said end 'face of the bushinghp against the closed end of the hub, locking y `devices that coperate with the bushing and `the groove in the axle, the said axle having a limited movementrelative to the locking devices` whereby to relieve the said` devices of end thrust strains, and lneans interposed between the axle end and the bushing for transferring the axle end thrust to the bushing and the wheel hub. the said hub and bushing having relatively annular grooves that form oil wells, the hub having a normally closed inlet for receiving the oil.

(l. In a wheel, the combination with an end closed `wheel hub, an axle that extends into the hub and having an annular groove near its 'inner enda closlue member that lits over the axle and closes the open end of the huh, a. closed end bushing bored to fit over the groove end ot the axle, roller hearings that take around the axle between the end closure andthe bushing and engagegthe of lesswidth than the axle groove Iwith which it alines, locking devices that "the axle and the bushing grooves,` and means for holdingtho closed end of the bushing up to the closed end of the hub.

7. In a wheel, the combination with an end closed wheel hub, an axle that extends v intothe hub and'. having an annular groove nearits inner end, a closure member that fits over the axle and closes the open end of the hub, a closed end bushing bored to lit over the groove end of the axle, roller bearings that take around the axle between the' end closure and the bushing and engagethe hub, said bushing having an annular groove of less width than the axle groove with 'which it alines, locking devices that engage the axle and the bushing grooves, and means for holding the closed end of the bushing up to the closed end of the hub, the said bushing having an annular groove rthat formsan oil well, the aforesaid Wheel hub having a normally. plugged oil receiving'aperture.

.8. As an improvement in car Wheels,` the combination with the wheel hub having a` closed outer end and the axle' having an annular groove nearits end; of a bushing bored to receive the axle and having a tapered inner closed end,'1neanslfor holding the said end adjacent the closedend of the hub, other means for interlockingthe said end to the hub, the said bushing having A,a

.segmental groove thatalines the bottom por-` tion of the axle groove and a transverse slotway that alinesthe upper part ofthe axle groove, the said axle groove being of greater width than-the slotway and groove in thebushing,r and( a bottom key device for coperating with the axle groove andithe segmental groove in the bottom of the hushing and a top key device that coperaties with the transverse slotway in the bushing and the upper axle groove section.

9. In a car wheel, the combination with a wheel having a closed end hub, an axle having an annular groove, a bushing having a closed end, the said bushing being adapted for snugly ,fitting in the wheel hub with its` closed end up to the closed hub end, said hub end and the bushing having interlock- .ing portions, the bushing having an internal `annular section and a transverse1 slotway that merges with the said groove section, means for removably holding the closed end of the bushing against the adjacent hub end, y

said groove and slotway in the bushing be? ing of less width than theaxle groove,the said bushing including a flanged outer, end that forms a closure for the open end of the wheel hul), said buksliing and the hub being relatively anuularly grooved to form. oil wells, the hub having a normally closed oil inlet, a key section adapted to be entered through the slotway` in the bushing to engage the axlegroove and the segmental groove in the bushing and an upper key seotion adapte-dito lit the transverse slotway in the bushing and the adjacent portion of the axle groove. i

10. In a car wheel, the combination with an annularly groovedaxle end, a bushing bored to fit over the said axle end,"loking key membersengging said groove and hziv-v l ing a relatively xed connection Withthe' -bushing,. said key members being of less width than the groove in the axle, e car 5 Wheel having a closed end tubular" huh in which. the -bushin and axle are received,

means fory inter ockably connecting the l. A- i 4 MONROE SLAUGHTER? bushing and the"hub,'said bushing and axle ment and means interposed betw of vthe axle and the `bu'sh'in jthe endthrusts .of the ax le to the bushingl havinga rrelativeyyv limited endwise moveeen the end 10 for tivansferring andthe vto thereby'jrelieve tuile looking key dev'ies rom'endwise strain. 

